Articles | Volume 11, issue 2
Solid Earth, 11, 547–578, 2020
Solid Earth, 11, 547–578, 2020
Research article
17 Apr 2020
Research article | 17 Apr 2020

Evolution of structures and hydrothermal alteration in a Palaeoproterozoic supracrustal belt: Constraining paired deformation–fluid flow events in an Fe and Cu–Au prospective terrain in northern Sweden

Joel B. H. Andersson et al.

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Cited articles

Åhäll, K.-I. and Larsson, S.-Å.: Growth related 1.85–1.55 Ga magmatism in the Baltic Shield; a review addressing the tectonic characteristics of the Svecofennian, TIB-1, and Gothian events, GFF, 122, 193–206, 2000. 
Allen, R. L., Weihed, P., and Svenson, S.-Å.: Setting of Zn-Cu-Au-Ag massive sulfide deposits in the evolution and facies architecture of a 1.9 Ga marine volcanic arc, Skellefte District, Sweden, Econ. Geol., 91, 1022–1053, 1996. 
Andersson, J. B. H.: Structural evolution of two ore-bearing metasupracrustal belts in the Kiruna area, northwestern Fennoscandian shield, Licentiate thesis, Luleå University of Technology, Sweden, 28 pp., 2019. 
Andersson, J. B. H., Bauer, T. E., Martinsson, O., and Wanhainen, C.: The tectonic overprint on the Per Geijer apatite iron ores in Kiruna, northern Sweden, Proceedings of the 14th SGA Biennal Meeting, 20–23 August 2017, Quebec City, Canada, 903–907, 2017. 
Andersson, U. B.: Granitoid episodes and mafic-felsic magma interaction in the Svecofennian of the Fennoscandian Shield, with main emphasis on the ∼1.8 Ga plutonics, Precambrian Res., 51, 127–149, 1991. 
Short summary
In this field-based study, geological structures and hydrothermal alterations in one of the least known geological terrains in Sweden are investigated. The area is located above the polar circle in northwestern Sweden that produces a significant portion of the iron and copper in the EU. A new tectonic model based on field evidence and microstructures is presented and it is shown that minerals typical for iron and copper–gold deposits can be linked to different phases of the structural evolution.